| // filesystem windows_file_codecvt.cpp -----------------------------------------// |
| |
| // Copyright Beman Dawes 2009 |
| |
| // Distributed under the Boost Software License, Version 1.0. |
| // See http://www.boost.org/LICENSE_1_0.txt |
| |
| // Library home page: http://www.boost.org/libs/filesystem |
| |
| //--------------------------------------------------------------------------------------// |
| |
| #include <boost/config.hpp> |
| #if !defined( BOOST_NO_STD_WSTRING ) |
| // Boost.Filesystem V3 and later requires std::wstring support. |
| // During the transition to V3, libraries are compiled with both V2 and V3 sources. |
| // On old compilers that don't support V3 anyhow, we just skip everything so the compile |
| // will succeed and the library can be built. |
| |
| // define BOOST_FILESYSTEM_SOURCE so that <boost/system/config.hpp> knows |
| // the library is being built (possibly exporting rather than importing code) |
| #define BOOST_FILESYSTEM_SOURCE |
| |
| #ifndef BOOST_SYSTEM_NO_DEPRECATED |
| # define BOOST_SYSTEM_NO_DEPRECATED |
| #endif |
| |
| #include <boost/filesystem/v3/config.hpp> |
| #include <cwchar> // for mbstate_t |
| |
| #ifdef BOOST_WINDOWS_API |
| |
| #include "windows_file_codecvt.hpp" |
| |
| #define WINVER 0x0500 // MinGW for GCC 4.4 requires this |
| #include <windows.h> |
| |
| std::codecvt_base::result windows_file_codecvt::do_in( |
| std::mbstate_t &, |
| const char* from, const char* from_end, const char*& from_next, |
| wchar_t* to, wchar_t* to_end, wchar_t*& to_next) const |
| { |
| UINT codepage = AreFileApisANSI() ? CP_THREAD_ACP : CP_OEMCP; |
| |
| int count; |
| if ((count = ::MultiByteToWideChar(codepage, MB_PRECOMPOSED, from, |
| from_end - from, to, to_end - to)) == 0) |
| { |
| return error; // conversion failed |
| } |
| |
| from_next = from_end; |
| to_next = to + count; |
| *to_next = L'\0'; |
| return ok; |
| } |
| |
| std::codecvt_base::result windows_file_codecvt::do_out( |
| std::mbstate_t &, |
| const wchar_t* from, const wchar_t* from_end, const wchar_t* & from_next, |
| char* to, char* to_end, char* & to_next) const |
| { |
| UINT codepage = AreFileApisANSI() ? CP_THREAD_ACP : CP_OEMCP; |
| |
| int count; |
| if ((count = ::WideCharToMultiByte(codepage, WC_NO_BEST_FIT_CHARS, from, |
| from_end - from, to, to_end - to, 0, 0)) == 0) |
| { |
| return error; // conversion failed |
| } |
| |
| from_next = from_end; |
| to_next = to + count; |
| *to_next = '\0'; |
| return ok; |
| } |
| |
| # endif // BOOST_WINDOWS_API |
| |
| #endif // no wide character support |